Apparatus for coating can bodies



Aug. l5, 1939. A. L.. KRoNQUEsT ,2,169,805

y AP-PARATUS FOR'COATING CAN BODIES Filed Nov. 10, 195'?A4 ssheets-sheet 1 Aug.1s ,1939. A. L. KRONQUEST 2,169,805

APPARATUS FOR GOATING CANBODIES Filed Nov. 10, 19:57 :s shams-sheet 2 lAug. l5, 1939. -A. L. KRoNQLu-:s-L 2,169,805

APPARATUS FOR COATIG CAN BODIES Filed Nov. 10, 1957 3 Sheets-Sheet 3lumen; 6-

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l '25 cation :by the Patented Aug. T151` 14,939 'i I UNITED 's'rATeS CANBooms Alfred Kronqnest, Syracuse, N.. Y., assignor to Continental CanCompany, Inc., New York,

N. Y., a corporation of New York Application November 1o, 1937, sen'alNo. 173,337

2 Claims.

lI'he invention relates generally to means for coat g can bodies and hasfor an object to provide a novel apparatus for coating open end portionsonly of said can bodies. 6 It is customary to interiorly coat metalliccontainers adapted toreceive certain products, so

chemical reaction uponA the beer sufcient to change its appearance,making it cloudy and nmarketable.

` The protective coating has been-applied in draining of surplussolution, following an-applidipping method, is to be found in theapplication for Letters Patent filed by Alfred L. Kronquest, on April12, 1937, Serial Number 136,473. v

It has been found that when cans are thus their surplus coating, the thecans wi-ll retain a satisfacbut due to capillary action, or of lthedraining coating maost ends f tory coating film, the, surface tensionterial, the iilm at the upper extremity of the cans 35 will become thinand inadequate, and during the' doubleseaming of such cans 'faultsappear at the inadequately' coatedends which will expose bare .metalportions to c ntact with the beer contained in such cans. Thus, invorder tobuild 11p-an ade- 40 quate protective coating lm at the topends of can bodies Ipropose to double coat such can ends, and theinvention seeks to provide a novel means for coating one open .end onlyoi the cans, thereby to-avoid the necessity of double coating 45 thewhole of the cans.. A

I n its more detailed nature, the invention resides in the provision ofa shallow, generally V- only of can ends disposedwrith-,their 50 axesinclined to the 'vertical'.

ing cans along in the trough, said trough being of a length atleastslightly exceeding the circumference of the.can so as to assure at leastone complete rotation of each can in the coat- 55 ingmaterial lcontainedin the trough.

ing or' head castings 1.

' which is suitably recessed A bar Il disposed in position receiving alimited and means for roll- With the above and otherobjects in viewwhich will more fully appear, the nature In the drawings: Figure 1 is aside elevation and part vertical cross section of the apparatus.

Figure 2 is a front elevation of the apparatus.

. Figure 3 is a vertical cross section taken on the line 3 3 onFigure'2.

Figure 4 is a detail side elevation and part section of a coated can.

In the practical development of the invention Each end standardincludes" a base casting, uprights or support rods 6, and troughsupport- The head castings 1 are the trough member 9 to provideaV-shaped recessed at 8 'to receive troughway I il for receiving thelacquer, enamel y or other coating material.

The head castings .1 also include diverging arms II, disposed atopposite sides of the troughwayas shown in Figures i1 and 3. A pair' ofspaced can supporting tracks troughway., Angle pieces I3 are secured tothe same arms and serveas supports for the guide for guiding and conningcan ends as they are rolledI along over the tracks in Figure 1.

The remaining arm of. each casting 1 'is' .equipped -with a bearingextension I5, the axis of which bearing is disposed parallel the tracksI2, and in-each bearing is mounted a shaft. I6 carrying a. pulley I1. Abelt I8 takes over the pulleys I1 and o ne ight thereof parallelsthetracks I2 and is spaced therefrom a distance equivalent. to the diameterof the cans I9 so as to engage the cans as shown in Figure 1 and rollthem along the tracks. The Y are flanged in. the usual manner asindicated at 20 and `one of the flanges rides the edge of the uppertrack and serves to hold the opposite end ofthe can spaced from theODPOSed wall ofthe troughway as indicated Aat 2l in Figure 3. It will benoted Aalsothat the guide bar` I l Will keep the cans from riding up outof the coating bath.

One head casting 1 also includes a horizontal bearing extension 22 inwhich a shaft 23 is roends of the cans I2 are 'secured upon I and extendbetween the arms at one side of the I2 and in the troughway I0 as shownmovement is vsuitable reduction gearing ze from a understood, however,that the degree `around the inside and outside mamy mounted 'medianasmdtheadiwent bev l and The motor is supported upon a bracket 3|v mountedon certain of the uprights i. By this means imparted io` the beltpurpose o! rolling the cans along in the troughway III. Y

A constant level o! coating liquid I2 is maintained in. the troughwayIl. being fed thereto through a pipe line 33 from a reservoir 3l formedin a casting 35 supported upon a suitable standard 3G. The reservoircasting as at I1, for the neck of an inverted positioned to form aliquid seal at the level at which it is'desii'ed to maintain the coatingin the troughway Il. Suitable additional support for the bottle isprovided 'at Il.

The reservoir-and troughway parts are so positioned and proportioned asto maintain a constant level oi' coating liquid-in the troughway. It

fhas been found that a level of from one to threefourths of an inch willsullice to provide the desired coating band.

' In this particular illustration I have disposed the head casting armsand troughway walls in right angular relation. thus disposing the trackslzaoastosupportthecanswiththeiraxestilted atanangleoftothevercal.Itistobe of tilt of the cans may be varied, and may be `less than thatspecically shown.

The eansmay befedfto and from the coating trough in any approved manner,as by connection with deliver! and orsimplecanruntrackage Figure 2.

Astheopenendsotthecans lirollalongin the troushway Il. dipping in thecoating'material n therein, said ends cylindrical band l2 of the`coating material rim of the canas asshowliin,4

showninlligurelandt.`

affords support, bottle 38 V-shaped troughway therein,

y length in excess of and receiving end portions Il wilireocive a narrowThis reinforcing band I2 of coating material may be applied either,before or after the can bodies have received their .total coating ashereinbetore described', and will effectively prevent exposure of baremetal at the can ends due to g out of the protective coating by drainingor otherwise; This coating may even be duplicated at the respective endsof the can, if desired, lbut it has been found that it can well bedispensed with at that end of cans which are dislowermost during thedraining operation incident to total coating.

What I claim is: l

l. In apparatus of the character described, a4 having diverging wallsforming a V-shaped troughway therein, coating material in the troughway,a can sup rt laterally aligned with one wall of the V-shaped troughwayand adapted to support a can with one side of one end immersed in thecoating material, means for 20 holding the can out of contact with thewalls of the troughway, and means for rotating the can on said supportto form a cylindrical band of coating at the immersed end thereof.

2. In apparatus of the characterdescribed, a trough member havingdiverging walls forming a coating material trackage paralleling thetronghway and forming an extension from one t plurality of end bodieswith one sidiv of one end of each can immersed in the coating materialand with the flanges' at the other ends of the cans engaging thetrackage in a manner for holding the immersed can body ends out ofcontact with the trackway walls, said troughway being of a thecircumference of a can, and anendiess belt paralleling the trackage andhaving a flight thereof engageable with-cans on the trackage for rollingthem along to provide a 40 lindrial coating at the immersed ends of theCy cans and ior maintaining the flange and trackage

